Unreachable code in QAnyStringView on MSVC

C:\Qt\6.4.0\msvc2019_64\include\QtCore\qanystringview.h(68) : error C2220: the following warning is treated as an error
C:\Qt\6.4.0\msvc2019_64\include\QtCore\qanystringview.h(68) : warning C4702: unreachable code

#include <QSettings>

int main(int /*argc*/, char* /*argv*/[])
{
    QSettings settings;
    settings.value("triggers unreachable code");
    return 0;
}

cmake_minimum_required(VERSION 3.14)

project(minimal-example LANGUAGES CXX)

set(CMAKE_INCLUDE_CURRENT_DIR ON)

set(CMAKE_AUTOUIC ON)
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)

set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

set(CXX_WARNINGS_AS_ERRORS $<$<CXX_COMPILER_ID:MSVC>:/W4 /WX>)
set(CXX_NO_SYSTEM_HEADER_WARNINGS $<$<CXX_COMPILER_ID:MSVC>:/experimental:external /external:anglebrackets /external:W0>)

find_package(QT NAMES Qt6 Qt5 REQUIRED COMPONENTS Core)
find_package(Qt${QT_VERSION_MAJOR} REQUIRED COMPONENTS Core)

add_executable(minimal-example main.cpp)
target_link_libraries(minimal-example Qt${QT_VERSION_MAJOR}::Core)
target_compile_options(minimal-example PRIVATE ${CXX_NO_SYSTEM_HEADER_WARNINGS} ${CXX_WARNINGS_AS_ERRORS})

install(TARGETS minimal-example LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR})